In regards to Well's sniper rifles. Their L96 has much better feedbacks from various users on different forums than with their VSR10.
The best VSR10 clone (with all the review that I look over the internet) seems to be the JG BAR-10. Unfortunately they are very hard to find these days.
If you go with a Well or UTG clone sniper go with a L96 not a VSR10. They make excellent platform and seems to be somewhat comparable. Some people have heard that the UTG is better other people heard that the Well was better...I am pretty sure that they are both pretty equal.